I tested positive on my igm test and waiting to retake my igg test in another 60days. I got one small red bump on the corner of my lip. It's not sore, doesn't itch, no sensation. To me it just looks like a pimple, but its been there for about a week now and I don't know what to think of it since my igm test came back positive. Is this what a cold sore is or is it just a pimple/zit? I also noticed a very very very small bump on the inside of my lip. Does it have any relation to the small red bump? Is it a cold sore? I don't have a doctor so I wouldn't be able to get it looked at.